Too sad to hear your story because of you loss of big amount due to poloniex problem have to share your bad experience with polo all social medias until reach every one.
Op already got his XRP back from poloniex. Can you atleast try to read the whole thread first?
I think, that poloniex was one of the best exchanges before opening Binance exchange. But now this exchange is developing every month and add new coins
Which exchange site you mean keep developing every month? Is it poloniex or binance? Poloniex rarely listed new coin/token on their site, recently they have added EOS coin.